Fernando valley.[35] the expansion of the interstate highway system during the xxxxs and xxxxs helped propel suburban growth and signaled the demise of the city's electrified rail system, once the world's largest. The xxxxs saw race relations boil-over into the watts riots of xxxx which resulted in 34 deaths and over 1,000 injuries. It was the most severe riot in the city's history until the los angeles riots of xxxx. In xxxx, los angeles became one of the birthplaces of the internet, as.